ENCI 595 Lecture 7: ENCI 595 05 - L7
12 Feb 2017
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Walls: out-of-plane design (chap 6 flexural walls, chap 7 load-bearing walls) Walls are typically subjected to axial load and moment. A wall can see 2-way bending (vertical bending and lateral bending) lateral bending results from spanning between piers, shear walls, columns, or other lateral supports. Most critical effect slenderness (buckling) textbook section 7. 5. Slenderness is a major issue, typically avoid euler buckling by designing against it being critical. For geometric walls, t doesn"t make sense, using radius of gyration is more sensible: where k is h is t is. If kh/t < (10 3. 5e1/e2) then slenderness effects can be ignored. Pbot e1 = smaller of 2 eccentricities e2 = larger of 2 eccentricities (load cannot be considered concentric) emin = (relevant clause 10. 7. 2) If (10 3. 5e1/e2) < kh/t < 30 then must use either p or moment magnifier method to find the total moment including the secondary moment.
